Laminated high moment magnetic films antiferromagnetic coupling as write pole of perpendicular magnetic recording head

摘要

A perpendicular write head includes a main pole comprising high moment magnetic layers laminated with both soft magnetic layers and non-magnetic layers for antiferromagnetic coupling (AFC) between the high moment material layers. The perpendicular write head includes a return pole connected to the main pole by a back gap closure at a distal end and separated from the main pole by a gap at an air bearing surface (ABS). A write coil is positioned between the main pole and the return pole and the surface area of the return pole at the ABS is substantially larger than the surface area of the main pole at the ABS.